Excuse the bluntness, but when a man/woman postpones a date not only once but several times, he/she just isnít that interested. Time to draw a line thru their name and move on.
As far as being on call and busy with work, if someone is a surgeon, navy seal, EMT, etc. that should be known from the beginning.
With online stuff, itís funny how some people will email and chat a lot, but they just donít have time for actual in-person dating. Red flag. If the person is that busy, they wouldnít have time to spend on dating sites.